Rerurn to Romy the Cat's Site


In the Forum: Analog Playback
In the Thread: The LCR RIAA correctors
Post Subject: The Allnic’s Mystery and class “F” operationPosted by Romy the Cat on: 10/18/2009
fiogf49gjkf0d

It is not a the thread about Allnic but LCR RIAA correctors, still there was something expressed in here about the Allnic LCR phonocorrector… and  I feel bad about it. It is not that I don’t think that Allnic LCR phonocorrector deserve positive mentioning.  Furthermore, I heard recently Allnic MC cartridge that I also liked. The problem that I have is that a remarkable amount of idiots visit my site, stupidly search for the brands that they want to buy and use this site (and many other sites) and a guidance for some kind of audio “recommendations”. I can’t stress how much I hate it and how I am bored I with those people. I invests effort do not any explicit reconditions at my site. Still, I got for the last few days emails from the site visiting Morons asking me if I fell that Allnic phonocorrector is better than two other phonocorrector and if I think that they need to buy it. What the idiots!

Anyhow, to offset my positive comments about Allnic phono I am harry to inform you that Minority is not alien to Allnic. I local guy own Allnic preamp that sounded like shit. Ok, I need to tell you that it did not sound like a bad sounding preamp – it sound worse. Regardless what you feel in the preams it out 10dB of dynamic range – I am not exaggerating – it converted the whole spectra of sound into one octave wide of 10dB range and it was it. I was mocking the preamp owner and proposed him to throw this preamp into the head of the idiot who was responsible for this sound.

The Allnic’s preamp is just one stage transformer-coupled buffer – how complex shall it be? We opened up the unit and the very first think that shocked me was that Allnic used my phonostage’s 7788 tube as driver for the preamp.  The 7788 tube that used for microphone preamp and MC cartridges, the tube that has 0.5V bias and no ability to drive anything, Allnic used to be fed from line-level input signal, that might saving as high as 2-3V. Can you pretend what would happen indirect heated signal time you drive with signal 6 times more then it’s bias? It is not class “B” operation anymore but the class “F”, as an abbreviation from the “Fucked operation”. Funny  that the Allnic web site say that preamp use 7721 tube, the one that I used in my phonocorrectors output:

http://www.allnicaudio.com/eng/products/view.htm?brandcode=0010030000000003&page=1

The 7721 is a driver tube with 1.7V on grid; it is still low but already something. Also the 7721 can driver some load. Replacing the stupid in this location 7788 to the 7721 did “fixed” the preamp.

Now the interesting question: how the hell the 7788 made into the Allnic’s preamp?  The guy who owns the preamp bought it brand ne and never opened it up.  It is not to mention that he just a user who does not know or care what is the difference between volt and ampere – he is highly not technical and very far from the nuts and bolts of audio.  The Allnic designer would hardly made this mistake – you need to be a completely idiot to use 7788 as a driver – the Allnic designer doe not strike me as an idiot. The distributor who sold the unit would also hardly make the substitute: the 7788 is twice more expensive and those industry primps would kill themselves for extra saving, it is not to mention that they are in most cases are too audio-retarded to do anything with hands or brain.  So, how the 7788 made into the Allnic preamp?

I did a courtesy call to the Allnic distributor informing him that I have in my hands a horribly performing brand new unit and I see that it uses 7788 tube as a driver. Instead of expressing regrets and proposing overnight the right tubes to fix the unit the Moron begin to question my assessment of the sound with 7788 and proposed me to talk with the designer.   Why do I need to talk with the designer – to confirm that the distributor is a dupe who has no idea what he sells? Oh, such a classified information!!!

Anyhow, I think I am too hard on the poor Allnic people.  It is most likely not their fault and the customers with screwed sound is not their liability. It is most likely the UPS people sting in this brown track, opening the Allnic units and replace the tubes. Nevertheless, if you do like the Allnic phonostage then you need to open it up and to confirm that Allnic did not use the 845 tube in input gain stage – they can as my experience shows…

The Cat

Rerurn to Romy the Cat's Site